Influence of arm length and number on star-shaped poly(2-isopropyl-2-oxazoline) aggregation in aqueous solutions near cloud point

被引：24

作者：

Amirova, Alina I. ^{[1
]}

Golub, Olga V. ^{[1
]}

Kirila, Tatyana U. ^{[1
]}

Razina, Alla B. ^{[1
]}

Tenkovtsev, Andrey V. ^{[1
,2
]}

Filippov, Alexander P. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia

[2] St Petersburg State Univ, St Petersburg Univ, St Petersburg 199034, Russia

来源：

SOFT MATERIALS | 2016年 / 14卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

Aggregation; light scattering; solution properties; star polymers; stimuli-sensitive polymers; BLOCK-COPOLYMERS; DRUG-DELIVERY; POLYMERS; BEHAVIOR; POLY(2-OXAZOLINE)S; ARCHITECTURE; ASSOCIATION; MICELLES;

D O I：

10.1080/1539445X.2015.1098703

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four-arm star-shaped poly(2-isopropyl-2-oxazolines) (PiPrOx(4)) are synthesized by cationic polymerization on t-butylcalix[4] arene macroinitiator. The obtained samples differ by polymerization degree of arms N-PiPrOx = 9 and 25 and are characterized in chloroform. The behavior in aqueous solutions is studied by light scattering methods and compared with the results of investigation of eight-arm star with similar structure. Three types of particles are observed in solution of short-arm PiPrOx4 at room temperature, whereas only two particle types are present in long-arm star solution. Arm shortening leads to widening of the phase transition interval. The arm number decreasing reduces the phase transition temperature by 1 degrees C.

引用

页码：15 / 26

页数：12

共 44 条

[1] Poly(2-oxazolines) in biological and biomedical application contexts [J].

Adams, Nico ;

Schubert, Ulrich S. .

ADVANCED DRUG DELIVERY REVIEWS, 2007, 59 (15) :1504-1520

[2] Self-assembly of star-shaped poly(2-isopropyl-2-oxazoline) in aqueous solutions [J].

Amirova, Alina I. ;

Dudkina, Marina M. ;

Tenkovtsev, Andrey V. ;

Filippov, Alexander P. .

COLLOID AND POLYMER SCIENCE, 2015, 293 (01) :239-248

[3] Scope of the copper halide/bipyridyl system associated with calixarene-based multihalides for the synthesis of well-defined polystyrene and poly(meth)acrylate stars [J].

Angot, S ;

Murthy, KS ;

Taton, D ;

Gnanou, Y .

MACROMOLECULES, 2000, 33 (20) :7261-7274

[4]

[Anonymous], 1989, RIGID CHAIN POLYM

[5]

Berne B. J., 2000, Dynamic light scattering: with applications to chemistry, biology, and physics

[6] Effect of Degree of Branching on the Thermoresponsive Phase Transition Behaviors of Hyperbranched Multiarm Copolymers: Comparison of Systems with LCST Transition Based on Coil-to-Globule Transition or Hydrophilic-Hydrophobic Balance [J].

Cheng, Haixing ;

Xie, Shaoai ;

Zhou, Yongfeng ;

Huang, Wei ;

Yan, Deyue ;

Yang, Jintian ;

Ji, Bing .

JOURNAL OF PHYSICAL CHEMISTRY B, 2010, 114 (19) :6291-6299

[7] STAR SHAPED POLYMERS - A MODEL FOR THE CONFORMATION AND ITS CONCENTRATION-DEPENDENCE [J].

DAOUD, M ;

COTTON, JP .

JOURNAL DE PHYSIQUE, 1982, 43 (03) :531-538

[8] Thermosensitive water-soluble copolymers with doubly responsive reversibly interacting entities [J].

Dimitrov, Ivaylo ;

Trzebicka, Barbara ;

Muller, Axel H. E. ;

Dworak, Andrzej ;

Tsvetanov, Christo B. .

PROGRESS IN POLYMER SCIENCE, 2007, 32 (11) :1275-1343

[9] Hyper/highly-branched polymers by radical polymerisations [J].

England, Richard Mark ;

Rimmer, Stephen .

POLYMER CHEMISTRY, 2010, 1 (10) :1533-1544

[10] Thermoresponsive Star-Shaped Poly(2-isopropyl-2-oxazoline) in Aqueous Solution [J].

Filippov, Alexander P. ;

Amirova, Alina I. ;

Dudkina, Marina M. ;

Tenkovtsev, Andrey V. .

INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION, 2013, 18 (08) :567-577

← 1 2 3 4 5 →